Electric-circuit controller



A. P. L. WILLATOWSKY.

ELBGTRIG CIRCUIT CONTROLLER.

Patented Oct. 2, 1888.

(No Model.)

UNITED STATES PATENT FFIQEO AUGUST F. L. IVILLATOIVSKY, OF STAllIFORD,CONNECTICUT.

ELECTRlC-ClRCUlT CONTROLLER.

SPECIFICATION forming part of Letters Patent No. 390,329, dated October2, 1888.

Application filed April 19, 1888. Serial No. 271,152. (No m del.)

To all 1071 0127, it may concern.-

Be it known that I, AUoUs'r F. L. WILLA- TOWSKY, a citizen of the UnitedStates, and a resident of Stamford, in the county of Fairfield and Stateof Connecticut, have invented certain new and useful Improvements inElectric-Circuit Controllers, ofwhich the following is a specification.

My invention relates to a new form of electric connection especiallyadapted for doors, windows, floors, and other locations in a sys tem ofburglaralarms, and arranged so that it can be readily changed from acircuit-breaker to a circuit-closer.

In the accompanying drawings the device is illustrated on an enlargedscale.

Figure l is a View in elevation, and Fig. 2 is a plan view, both viewsbeing drawn to approximately the same scale.

The device consists of the combination of a base-plate, a, two uprightposts, I), provided with bearings, a rotary shaft or spindle, 0, havinga screw-head, d, and supported in said bearings, an insulator, 0,carried upon said base and provided with a projecting spring, f, whichhas an in wardly-turned spring or arm,

{1, a pin, h, secured to the spindle and normally pressing against thesaid arm 9 when the device is to be employed as a circuitbreaker, a cam,'1', passing loosely through the base-plate and carried by the saidspindle, a set-screw, 7', located upon the cam and normally screwedtightly against the spindle, so that the spindle will move with the cam,a spring, Z, having at its middle portion a coil, Z, and secured to thecam, an elevated guide, on, for one end of the spring, and suitablescrew holes, n, in the base-platc. whereby the device may be attached tothe door or other desired location.

7 One of the electric terminals is attached to the spring Z and theother to any convenient part of the instrument, the same being made ofmetal.

The modus operandi is as follows: hen the set-screwj is loosened, thepin it maybe set in any direction by turning the spindle c. If it isturned to the position shown, then the set screw is turned so that thecam is held rigidly 53 by the said set-screw. The device having beenspace very economically.

put into the required location, then when the cam is forced so as torotate to the left the pin no longer presses against the spring Z, andtherefore the circuit becomes broken. h represents the position in whichthe pin is to be placed when the device is to be employed as acircuit-closer. A similar motion of the cam will cause the pin toimpinge against the spring and close the circuit. In either of the twocases the spring Zforces the cam and pin back into their originalpositions as soon as the cam is liberated. It may be'noticed that thepin in its motion has a scraping or rubbing effect upon the springf,thereby insuring good eontact. The device may be easily changed from acircuit-breaker to a circuit-closer, affording a great convenience andeconomy in its manufacture and use. When employed as a footswitch, inwhich case it is located on the floor,

it is not clogged by dust and sweepings, for such can drop through thespace around the cam without interfering with the points of contact. Insuch use the device would have an inverted position from that shown inthe drawings. Heretoforc it has been usual in lioor-connections to havea projecting plunger extending above the floor, and the same is oftenbent by a brisk walker, whereas this cam or lever-cam may be pressedupon either perpendicularly or obliquely, and yet it will operate-z.(2., it will pass through the hole in the plate and operate thecontacts.

In practice the two pillars or posts Z) are closer together and theinsulator is moved nearer to the cam, so that the device occupies Ireserve the right to make similar changes not shown and not possessed ofpatentable novelty.

I claim as my invention 1. A circuit-controller consisting of the conran insulator which carries a spring-contact, a spindle provided with aset-screw and with a cam for the purpose, as described, of operating tomake and break the circuit, a contactvpin secured to said spindle, and aretractile spring attached to the said spindle.

2. A circuit-controller consisting of the combination of a pivoted cam,a set-screw carried by said cam and screwed against the pivot or 9bination ofa suitable support provided with r spindle of the cam, anelectric contact pin semy invention I have signed my name, in rescuredto said spindle, a second contact terinience of two witness s, this 14thday of April, nating in aspring arranged in the path of the 1888. Vfirst-named contact, and a spring having one AUGUST F. L. W'ILLATOWSKY.5 end attached to the cam and the other bearing \Vitnessesz'frictionally in a guide JOHN B. REED, J12,

In testimony that I claim the foregoing as HERVEY SMITH.

